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Diffstat (limited to 'Documentation/networking/device_drivers/ethernet/ti')
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diff --git a/Documentation/networking/device_drivers/ethernet/ti/am65_nuss_cpsw_switchdev.rst b/Documentation/networking/device_drivers/ethernet/ti/am65_nuss_cpsw_switchdev.rst new file mode 100644 index 000000000000..25fd9aa284e2 --- /dev/null +++ b/Documentation/networking/device_drivers/ethernet/ti/am65_nuss_cpsw_switchdev.rst @@ -0,0 +1,143 @@ +.. SPDX-License-Identifier: GPL-2.0 + +=================================================================== +Texas Instruments K3 AM65 CPSW NUSS switchdev based ethernet driver +=================================================================== + +:Version: 1.0 + +Port renaming +============= + +In order to rename via udev:: + + ip -d link show dev sw0p1 | grep switchid + + SUBSYSTEM=="net", ACTION=="add", ATTR{phys_switch_id}==<switchid>, \ + ATTR{phys_port_name}!="", NAME="sw0$attr{phys_port_name}" + + +Multi mac mode +============== + +- The driver is operating in multi-mac mode by default, thus + working as N individual network interfaces. + +Devlink configuration parameters +================================ + +See Documentation/networking/devlink/am65-nuss-cpsw-switch.rst + +Enabling "switch" +================= + +The Switch mode can be enabled by configuring devlink driver parameter +"switch_mode" to 1/true:: + + devlink dev param set platform/c000000.ethernet \ + name switch_mode value true cmode runtime + +This can be done regardless of the state of Port's netdev devices - UP/DOWN, but +Port's netdev devices have to be in UP before joining to the bridge to avoid +overwriting of bridge configuration as CPSW switch driver completely reloads its +configuration when first port changes its state to UP. + +When the both interfaces joined the bridge - CPSW switch driver will enable +marking packets with offload_fwd_mark flag. + +All configuration is implemented via switchdev API. + +Bridge setup +============ + +:: + + devlink dev param set platform/c000000.ethernet \ + name switch_mode value true cmode runtime + + ip link add name br0 type bridge + ip link set dev br0 type bridge ageing_time 1000 + ip link set dev sw0p1 up + ip link set dev sw0p2 up + ip link set dev sw0p1 master br0 + ip link set dev sw0p2 master br0 + + [*] bridge vlan add dev br0 vid 1 pvid untagged self + + [*] if vlan_filtering=1. where default_pvid=1 + + Note. Steps [*] are mandatory. + + +On/off STP +========== + +:: + + ip link set dev BRDEV type bridge stp_state 1/0 + +VLAN configuration +================== + +:: + + bridge vlan add dev br0 vid 1 pvid untagged self <---- add cpu port to VLAN 1 + +Note. This step is mandatory for bridge/default_pvid. + +Add extra VLANs +=============== + + 1. untagged:: + + bridge vlan add dev sw0p1 vid 100 pvid untagged master + bridge vlan add dev sw0p2 vid 100 pvid untagged master + bridge vlan add dev br0 vid 100 pvid untagged self <---- Add cpu port to VLAN100 + + 2. tagged:: + + bridge vlan add dev sw0p1 vid 100 master + bridge vlan add dev sw0p2 vid 100 master + bridge vlan add dev br0 vid 100 pvid tagged self <---- Add cpu port to VLAN100 + +FDBs +---- + +FDBs are automatically added on the appropriate switch port upon detection + +Manually adding FDBs:: + + bridge fdb add aa:bb:cc:dd:ee:ff dev sw0p1 master vlan 100 + bridge fdb add aa:bb:cc:dd:ee:fe dev sw0p2 master <---- Add on all VLANs + +MDBs +---- + +MDBs are automatically added on the appropriate switch port upon detection + +Manually adding MDBs:: + + bridge mdb add dev br0 port sw0p1 grp 239.1.1.1 permanent vid 100 + bridge mdb add dev br0 port sw0p1 grp 239.1.1.1 permanent <---- Add on all VLANs + +Multicast flooding +================== +CPU port mcast_flooding is always on + +Turning flooding on/off on switch ports: +bridge link set dev sw0p1 mcast_flood on/off + +Access and Trunk port +===================== + +:: + + bridge vlan add dev sw0p1 vid 100 pvid untagged master + bridge vlan add dev sw0p2 vid 100 master + + + bridge vlan add dev br0 vid 100 self + ip link add link br0 name br0.100 type vlan id 100 + +Note. Setting PVID on Bridge device itself works only for +default VLAN (default_pvid). diff --git a/Documentation/networking/device_drivers/ethernet/ti/cpsw.rst b/Documentation/networking/device_drivers/ethernet/ti/cpsw.rst new file mode 100644 index 000000000000..a88946bd188b --- /dev/null +++ b/Documentation/networking/device_drivers/ethernet/ti/cpsw.rst @@ -0,0 +1,587 @@ +.. SPDX-License-Identifier: GPL-2.0 + +====================================== +Texas Instruments CPSW ethernet driver +====================================== + +Multiqueue & CBS & MQPRIO +========================= + + +The cpsw has 3 CBS shapers for each external ports. This document +describes MQPRIO and CBS Qdisc offload configuration for cpsw driver +based on examples. It potentially can be used in audio video bridging +(AVB) and time sensitive networking (TSN). + +The following examples were tested on AM572x EVM and BBB boards. + +Test setup +========== + +Under consideration two examples with AM572x EVM running cpsw driver +in dual_emac mode. + +Several prerequisites: + +- TX queues must be rated starting from txq0 that has highest priority +- Traffic classes are used starting from 0, that has highest priority +- CBS shapers should be used with rated queues +- The bandwidth for CBS shapers has to be set a little bit more then + potential incoming rate, thus, rate of all incoming tx queues has + to be a little less +- Real rates can differ, due to discreetness +- Map skb-priority to txq is not enough, also skb-priority to l2 prio + map has to be created with ip or vconfig tool +- Any l2/socket prio (0 - 7) for classes can be used, but for + simplicity default values are used: 3 and 2 +- only 2 classes tested: A and B, but checked and can work with more, + maximum allowed 4, but only for 3 rate can be set. + +Test setup for examples +======================= + +:: + + +-------------------------------+ + |--+ | + | | Workstation0 | + |E | MAC 18:03:73:66:87:42 | + +-----------------------------+ +--|t | | + | | 1 | E | | |h |./tsn_listener -d \ | + | Target board: | 0 | t |--+ |0 | 18:03:73:66:87:42 -i eth0 \| + | AM572x EVM | 0 | h | | | -s 1500 | + | | 0 | 0 | |--+ | + | Only 2 classes: |Mb +---| +-------------------------------+ + | class A, class B | | + | | +---| +-------------------------------+ + | | 1 | E | |--+ | + | | 0 | t | | | Workstation1 | + | | 0 | h |--+ |E | MAC 20:cf:30:85:7d:fd | + | |Mb | 1 | +--|t | | + +-----------------------------+ |h |./tsn_listener -d \ | + |0 | 20:cf:30:85:7d:fd -i eth0 \| + | | -s 1500 | + |--+ | + +-------------------------------+ + + +Example 1: One port tx AVB configuration scheme for target board +---------------------------------------------------------------- + +(prints and scheme for AM572x evm, applicable for single port boards) + +- tc - traffic class +- txq - transmit queue +- p - priority +- f - fifo (cpsw fifo) +- S - shaper configured + +:: + + +------------------------------------------------------------------+ u + | +---------------+ +---------------+ +------+ +------+ | s + | | | | | | | | | | e + | | App 1 | | App 2 | | Apps | | Apps | | r + | | Class A | | Class B | | Rest | | Rest | | + | | Eth0 | | Eth0 | | Eth0 | | Eth1 | | s + | | VLAN100 | | VLAN100 | | | | | | | | p + | | 40 Mb/s | | 20 Mb/s | | | | | | | | a + | | SO_PRIORITY=3 | | SO_PRIORITY=2 | | | | | | | | c + | | | | | | | | | | | | | | e + | +---|-----------+ +---|-----------+ +---|--+ +---|--+ | + +-----|------------------|------------------|--------|-------------+ + +-+ +------------+ | | + | | +-----------------+ +--+ + | | | | + +---|-------|-------------|-----------------------|----------------+ + | +----+ +----+ +----+ +----+ +----+ | + | | p3 | | p2 | | p1 | | p0 | | p0 | | k + | \ / \ / \ / \ / \ / | e + | \ / \ / \ / \ / \ / | r + | \/ \/ \/ \/ \/ | n + | | | | | | e + | | | +-----+ | | l + | | | | | | + | +----+ +----+ +----+ +----+ | s + | |tc0 | |tc1 | |tc2 | |tc0 | | p + | \ / \ / \ / \ / | a + | \ / \ / \ / \ / | c + | \/ \/ \/ \/ | e + | | | +-----+ | | + | | | | | | | + | | | | | | | + | | | | | | | + | +----+ +----+ +----+ +----+ +----+ | + | |txq0| |txq1| |txq2| |txq3| |txq4| | + | \ / \ / \ / \ / \ / | + | \ / \ / \ / \ / \ / | + | \/ \/ \/ \/ \/ | + | +-|------|------|------|--+ +--|--------------+ | + | | | | | | | Eth0.100 | | Eth1 | | + +---|------|------|------|------------------------|----------------+ + | | | | | + p p p p | + 3 2 0-1, 4-7 <- L2 priority | + | | | | | + | | | | | + +---|------|------|------|------------------------|----------------+ + | | | | | |----------+ | + | +----+ +----+ +----+ +----+ +----+ | + | |dma7| |dma6| |dma5| |dma4| |dma3| | + | \ / \ / \ / \ / \ / | c + | \S / \S / \ / \ / \ / | p + | \/ \/ \/ \/ \/ | s + | | | | +----- | | w + | | | | | | | + | | | | | | | d + | +----+ +----+ +----+p p+----+ | r + | | | | | | |o o| | | i + | | f3 | | f2 | | f0 |r r| f0 | | v + | |tc0 | |tc1 | |tc2 |t t|tc0 | | e + | \CBS / \CBS / \CBS /1 2\CBS / | r + | \S / \S / \ / \ / | + | \/ \/ \/ \/ | + +------------------------------------------------------------------+ + + +1) :: + + + // Add 4 tx queues, for interface Eth0, and 1 tx queue for Eth1 + $ ethtool -L eth0 rx 1 tx 5 + rx unmodified, ignoring + +2) :: + + // Check if num of queues is set correctly: + $ ethtool -l eth0 + Channel parameters for eth0: + Pre-set maximums: + RX: 8 + TX: 8 + Other: 0 + Combined: 0 + Current hardware settings: + RX: 1 + TX: 5 + Other: 0 + Combined: 0 + +3) :: + + // TX queues must be rated starting from 0, so set bws for tx0 and tx1 + // Set rates 40 and 20 Mb/s appropriately. + // Pay attention, real speed can differ a bit due to discreetness. + // Leave last 2 tx queues not rated. + $ echo 40 > /sys/class/net/eth0/queues/tx-0/tx_maxrate + $ echo 20 > /sys/class/net/eth0/queues/tx-1/tx_maxrate + +4) :: + + // Check maximum rate of tx (cpdma) queues: + $ cat /sys/class/net/eth0/queues/tx-*/tx_maxrate + 40 + 20 + 0 + 0 + 0 + +5) :: + + // Map skb->priority to traffic class: + // 3pri -> tc0, 2pri -> tc1, (0,1,4-7)pri -> tc2 + // Map traffic class to transmit queue: + // tc0 -> txq0, tc1 -> txq1, tc2 -> (txq2, txq3) + $ tc qdisc replace dev eth0 handle 100: parent root mqprio num_tc 3 \ + map 2 2 1 0 2 2 2 2 2 2 2 2 2 2 2 2 queues 1@0 1@1 2@2 hw 1 + +5a) :: + + // As two interface sharing same set of tx queues, assign all traffic + // coming to interface Eth1 to separate queue in order to not mix it + // with traffic from interface Eth0, so use separate txq to send + // packets to Eth1, so all prio -> tc0 and tc0 -> txq4 + // Here hw 0, so here still default configuration for eth1 in hw + $ tc qdisc replace dev eth1 handle 100: parent root mqprio num_tc 1 \ + map 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 queues 1@4 hw 0 + +6) :: + + // Check classes settings + $ tc -g class show dev eth0 + +---(100:ffe2) mqprio + | +---(100:3) mqprio + | +---(100:4) mqprio + | + +---(100:ffe1) mqprio + | +---(100:2) mqprio + | + +---(100:ffe0) mqprio + +---(100:1) mqprio + + $ tc -g class show dev eth1 + +---(100:ffe0) mqprio + +---(100:5) mqprio + +7) :: + + // Set rate for class A - 41 Mbit (tc0, txq0) using CBS Qdisc + // Set it +1 Mb for reserve (important!) + // here only idle slope is important, others arg are ignored + // Pay attention, real speed can differ a bit due to discreetness + $ tc qdisc add dev eth0 parent 100:1 cbs locredit -1438 \ + hicredit 62 sendslope -959000 idleslope 41000 offload 1 + net eth0: set FIFO3 bw = 50 + +8) :: + + // Set rate for class B - 21 Mbit (tc1, txq1) using CBS Qdisc: + // Set it +1 Mb for reserve (important!) + $ tc qdisc add dev eth0 parent 100:2 cbs locredit -1468 \ + hicredit 65 sendslope -979000 idleslope 21000 offload 1 + net eth0: set FIFO2 bw = 30 + +9) :: + + // Create vlan 100 to map sk->priority to vlan qos + $ ip link add link eth0 name eth0.100 type vlan id 100 + 8021q: 802.1Q VLAN Support v1.8 + 8021q: adding VLAN 0 to HW filter on device eth0 + 8021q: adding VLAN 0 to HW filter on device eth1 + net eth0: Adding vlanid 100 to vlan filter + +10) :: + + // Map skb->priority to L2 prio, 1 to 1 + $ ip link set eth0.100 type vlan \ + egress 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7 + +11) :: + + // Check egress map for vlan 100 + $ cat /proc/net/vlan/eth0.100 + [...] + INGRESS priority mappings: 0:0 1:0 2:0 3:0 4:0 5:0 6:0 7:0 + EGRESS priority mappings: 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7 + +12) :: + + // Run your appropriate tools with socket option "SO_PRIORITY" + // to 3 for class A and/or to 2 for class B + // (I took at https://www.spinics.net/lists/netdev/msg460869.html) + ./tsn_talker -d 18:03:73:66:87:42 -i eth0.100 -p3 -s 1500& + ./tsn_talker -d 18:03:73:66:87:42 -i eth0.100 -p2 -s 1500& + +13) :: + + // run your listener on workstation (should be in same vlan) + // (I took at https://www.spinics.net/lists/netdev/msg460869.html) + ./tsn_listener -d 18:03:73:66:87:42 -i enp5s0 -s 1500 + Receiving data rate: 39012 kbps + Receiving data rate: 39012 kbps + Receiving data rate: 39012 kbps + Receiving data rate: 39012 kbps + Receiving data rate: 39012 kbps + Receiving data rate: 39012 kbps + Receiving data rate: 39012 kbps + Receiving data rate: 39012 kbps + Receiving data rate: 39012 kbps + Receiving data rate: 39012 kbps + Receiving data rate: 39012 kbps + Receiving data rate: 39012 kbps + Receiving data rate: 39000 kbps + +14) :: + + // Restore default configuration if needed + $ ip link del eth0.100 + $ tc qdisc del dev eth1 root + $ tc qdisc del dev eth0 root + net eth0: Prev FIFO2 is shaped + net eth0: set FIFO3 bw = 0 + net eth0: set FIFO2 bw = 0 + $ ethtool -L eth0 rx 1 tx 1 + +Example 2: Two port tx AVB configuration scheme for target board +---------------------------------------------------------------- + +(prints and scheme for AM572x evm, for dual emac boards only) + +:: + + +------------------------------------------------------------------+ u + | +----------+ +----------+ +------+ +----------+ +----------+ | s + | | | | | | | | | | | | e + | | App 1 | | App 2 | | Apps | | App 3 | | App 4 | | r + | | Class A | | Class B | | Rest | | Class B | | Class A | | + | | Eth0 | | Eth0 | | | | | Eth1 | | Eth1 | | s + | | VLAN100 | | VLAN100 | | | | | VLAN100 | | VLAN100 | | p + | | 40 Mb/s | | 20 Mb/s | | | | | 10 Mb/s | | 30 Mb/s | | a + | | SO_PRI=3 | | SO_PRI=2 | | | | | SO_PRI=3 | | SO_PRI=2 | | c + | | | | | | | | | | | | | | | | | e + | +---|------+ +---|------+ +---|--+ +---|------+ +---|------+ | + +-----|-------------|-------------|---------|-------------|--------+ + +-+ +-------+ | +----------+ +----+ + | | +-------+------+ | | + | | | | | | + +---|-------|-------------|--------------|-------------|-------|---+ + | +----+ +----+ +----+ +----+ +----+ +----+ +----+ +----+ | + | | p3 | | p2 | | p1 | | p0 | | p0 | | p1 | | p2 | | p3 | | k + | \ / \ / \ / \ / \ / \ / \ / \ / | e + | \ / \ / \ / \ / \ / \ / \ / \ / | r + | \/ \/ \/ \/ \/ \/ \/ \/ | n + | | | | | | | | e + | | | +----+ +----+ | | | l + | | | | | | | | + | +----+ +----+ +----+ +----+ +----+ +----+ | s + | |tc0 | |tc1 | |tc2 | |tc2 | |tc1 | |tc0 | | p + | \ / \ / \ / \ / \ / \ / | a + | \ / \ / \ / \ / \ / \ / | c + | \/ \/ \/ \/ \/ \/ | e + | | | +-----+ +-----+ | | | + | | | | | | | | | | + | | | | | | | | | | + | | | | | E E | | | | | + | +----+ +----+ +----+ +----+ t t +----+ +----+ +----+ +----+ | + | |txq0| |txq1| |txq4| |txq5| h h |txq6| |txq7| |txq3| |txq2| | + | \ / \ / \ / \ / 0 1 \ / \ / \ / \ / | + | \ / \ / \ / \ / . . \ / \ / \ / \ / | + | \/ \/ \/ \/ 1 1 \/ \/ \/ \/ | + | +-|------|------|------|--+ 0 0 +-|------|------|------|--+ | + | | | | | | | 0 0 | | | | | | | + +---|------|------|------|---------------|------|------|------|----+ + | | | | | | | | + p p p p p p p p + 3 2 0-1, 4-7 <-L2 pri-> 0-1, 4-7 2 3 + | | | | | | | | + | | | | | | | | + +---|------|------|------|---------------|------|------|------|----+ + | | | | | | | | | | + | +----+ +----+ +----+ +----+ +----+ +----+ +----+ +----+ | + | |dma7| |dma6| |dma3| |dma2| |dma1| |dma0| |dma4| |dma5| | + | \ / \ / \ / \ / \ / \ / \ / \ / | c + | \S / \S / \ / \ / \ / \ / \S / \S / | p + | \/ \/ \/ \/ \/ \/ \/ \/ | s + | | | | +----- | | | | | w + | | | | | +----+ | | | | + | | | | | | | | | | d + | +----+ +----+ +----+p p+----+ +----+ +----+ | r + | | | | | | |o o| | | | | | | i + | | f3 | | f2 | | f0 |r CPSW r| f3 | | f2 | | f0 | | v + | |tc0 | |tc1 | |tc2 |t t|tc0 | |tc1 | |tc2 | | e + | \CBS / \CBS / \CBS /1 2\CBS / \CBS / \CBS / | r + | \S / \S / \ / \S / \S / \ / | + | \/ \/ \/ \/ \/ \/ | + +------------------------------------------------------------------+ + ========================================Eth==========================> + +1) :: + + // Add 8 tx queues, for interface Eth0, but they are common, so are accessed + // by two interfaces Eth0 and Eth1. + $ ethtool -L eth1 rx 1 tx 8 + rx unmodified, ignoring + +2) :: + + // Check if num of queues is set correctly: + $ ethtool -l eth0 + Channel parameters for eth0: + Pre-set maximums: + RX: 8 + TX: 8 + Other: 0 + Combined: 0 + Current hardware settings: + RX: 1 + TX: 8 + Other: 0 + Combined: 0 + +3) :: + + // TX queues must be rated starting from 0, so set bws for tx0 and tx1 for Eth0 + // and for tx2 and tx3 for Eth1. That is, rates 40 and 20 Mb/s appropriately + // for Eth0 and 30 and 10 Mb/s for Eth1. + // Real speed can differ a bit due to discreetness + // Leave last 4 tx queues as not rated + $ echo 40 > /sys/class/net/eth0/queues/tx-0/tx_maxrate + $ echo 20 > /sys/class/net/eth0/queues/tx-1/tx_maxrate + $ echo 30 > /sys/class/net/eth1/queues/tx-2/tx_maxrate + $ echo 10 > /sys/class/net/eth1/queues/tx-3/tx_maxrate + +4) :: + + // Check maximum rate of tx (cpdma) queues: + $ cat /sys/class/net/eth0/queues/tx-*/tx_maxrate + 40 + 20 + 30 + 10 + 0 + 0 + 0 + 0 + +5) :: + + // Map skb->priority to traffic class for Eth0: + // 3pri -> tc0, 2pri -> tc1, (0,1,4-7)pri -> tc2 + // Map traffic class to transmit queue: + // tc0 -> txq0, tc1 -> txq1, tc2 -> (txq4, txq5) + $ tc qdisc replace dev eth0 handle 100: parent root mqprio num_tc 3 \ + map 2 2 1 0 2 2 2 2 2 2 2 2 2 2 2 2 queues 1@0 1@1 2@4 hw 1 + +6) :: + + // Check classes settings + $ tc -g class show dev eth0 + +---(100:ffe2) mqprio + | +---(100:5) mqprio + | +---(100:6) mqprio + | + +---(100:ffe1) mqprio + | +---(100:2) mqprio + | + +---(100:ffe0) mqprio + +---(100:1) mqprio + +7) :: + + // Set rate for class A - 41 Mbit (tc0, txq0) using CBS Qdisc for Eth0 + // here only idle slope is important, others ignored + // Real speed can differ a bit due to discreetness + $ tc qdisc add dev eth0 parent 100:1 cbs locredit -1470 \ + hicredit 62 sendslope -959000 idleslope 41000 offload 1 + net eth0: set FIFO3 bw = 50 + +8) :: + + // Set rate for class B - 21 Mbit (tc1, txq1) using CBS Qdisc for Eth0 + $ tc qdisc add dev eth0 parent 100:2 cbs locredit -1470 \ + hicredit 65 sendslope -979000 idleslope 21000 offload 1 + net eth0: set FIFO2 bw = 30 + +9) :: + + // Create vlan 100 to map sk->priority to vlan qos for Eth0 + $ ip link add link eth0 name eth0.100 type vlan id 100 + net eth0: Adding vlanid 100 to vlan filter + +10) :: + + // Map skb->priority to L2 prio for Eth0.100, one to one + $ ip link set eth0.100 type vlan \ + egress 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7 + +11) :: + + // Check egress map for vlan 100 + $ cat /proc/net/vlan/eth0.100 + [...] + INGRESS priority mappings: 0:0 1:0 2:0 3:0 4:0 5:0 6:0 7:0 + EGRESS priority mappings: 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7 + +12) :: + + // Map skb->priority to traffic class for Eth1: + // 3pri -> tc0, 2pri -> tc1, (0,1,4-7)pri -> tc2 + // Map traffic class to transmit queue: + // tc0 -> txq2, tc1 -> txq3, tc2 -> (txq6, txq7) + $ tc qdisc replace dev eth1 handle 100: parent root mqprio num_tc 3 \ + map 2 2 1 0 2 2 2 2 2 2 2 2 2 2 2 2 queues 1@2 1@3 2@6 hw 1 + +13) :: + + // Check classes settings + $ tc -g class show dev eth1 + +---(100:ffe2) mqprio + | +---(100:7) mqprio + | +---(100:8) mqprio + | + +---(100:ffe1) mqprio + | +---(100:4) mqprio + | + +---(100:ffe0) mqprio + +---(100:3) mqprio + +14) :: + + // Set rate for class A - 31 Mbit (tc0, txq2) using CBS Qdisc for Eth1 + // here only idle slope is important, others ignored, but calculated + // for interface speed - 100Mb for eth1 port. + // Set it +1 Mb for reserve (important!) + $ tc qdisc add dev eth1 parent 100:3 cbs locredit -1035 \ + hicredit 465 sendslope -69000 idleslope 31000 offload 1 + net eth1: set FIFO3 bw = 31 + +15) :: + + // Set rate for class B - 11 Mbit (tc1, txq3) using CBS Qdisc for Eth1 + // Set it +1 Mb for reserve (important!) + $ tc qdisc add dev eth1 parent 100:4 cbs locredit -1335 \ + hicredit 405 sendslope -89000 idleslope 11000 offload 1 + net eth1: set FIFO2 bw = 11 + +16) :: + + // Create vlan 100 to map sk->priority to vlan qos for Eth1 + $ ip link add link eth1 name eth1.100 type vlan id 100 + net eth1: Adding vlanid 100 to vlan filter + +17) :: + + // Map skb->priority to L2 prio for Eth1.100, one to one + $ ip link set eth1.100 type vlan \ + egress 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7 + +18) :: + + // Check egress map for vlan 100 + $ cat /proc/net/vlan/eth1.100 + [...] + INGRESS priority mappings: 0:0 1:0 2:0 3:0 4:0 5:0 6:0 7:0 + EGRESS priority mappings: 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7 + +19) :: + + // Run appropriate tools with socket option "SO_PRIORITY" to 3 + // for class A and to 2 for class B. For both interfaces + ./tsn_talker -d 18:03:73:66:87:42 -i eth0.100 -p2 -s 1500& + ./tsn_talker -d 18:03:73:66:87:42 -i eth0.100 -p3 -s 1500& + ./tsn_talker -d 20:cf:30:85:7d:fd -i eth1.100 -p2 -s 1500& + ./tsn_talker -d 20:cf:30:85:7d:fd -i eth1.100 -p3 -s 1500& + +20) :: + + // run your listener on workstation (should be in same vlan) + // (I took at https://www.spinics.net/lists/netdev/msg460869.html) + ./tsn_listener -d 18:03:73:66:87:42 -i enp5s0 -s 1500 + Receiving data rate: 39012 kbps + Receiving data rate: 39012 kbps + Receiving data rate: 39012 kbps + Receiving data rate: 39012 kbps + Receiving data rate: 39012 kbps + Receiving data rate: 39012 kbps + Receiving data rate: 39012 kbps + Receiving data rate: 39012 kbps + Receiving data rate: 39012 kbps + Receiving data rate: 39012 kbps + Receiving data rate: 39012 kbps + Receiving data rate: 39012 kbps + Receiving data rate: 39000 kbps + +21) :: + + // Restore default configuration if needed + $ ip link del eth1.100 + $ ip link del eth0.100 + $ tc qdisc del dev eth1 root + net eth1: Prev FIFO2 is shaped + net eth1: set FIFO3 bw = 0 + net eth1: set FIFO2 bw = 0 + $ tc qdisc del dev eth0 root + net eth0: Prev FIFO2 is shaped + net eth0: set FIFO3 bw = 0 + net eth0: set FIFO2 bw = 0 + $ ethtool -L eth0 rx 1 tx 1 diff --git a/Documentation/networking/device_drivers/ethernet/ti/cpsw_switchdev.rst b/Documentation/networking/device_drivers/ethernet/ti/cpsw_switchdev.rst new file mode 100644 index 000000000000..464dce938ed1 --- /dev/null +++ b/Documentation/networking/device_drivers/ethernet/ti/cpsw_switchdev.rst @@ -0,0 +1,242 @@ +.. SPDX-License-Identifier: GPL-2.0 + +====================================================== +Texas Instruments CPSW switchdev based ethernet driver +====================================================== + +:Version: 2.0 + +Port renaming +============= + +On older udev versions renaming of ethX to swXpY will not be automatically +supported + +In order to rename via udev:: + + ip -d link show dev sw0p1 | grep switchid + + SUBSYSTEM=="net", ACTION=="add", ATTR{phys_switch_id}==<switchid>, \ + ATTR{phys_port_name}!="", NAME="sw0$attr{phys_port_name}" + + +Dual mac mode +============= + +- The new (cpsw_new.c) driver is operating in dual-emac mode by default, thus + working as 2 individual network interfaces. Main differences from legacy CPSW + driver are: + + - optimized promiscuous mode: The P0_UNI_FLOOD (both ports) is enabled in + addition to ALLMULTI (current port) instead of ALE_BYPASS. + So, Ports in promiscuous mode will keep possibility of mcast and vlan + filtering, which is provides significant benefits when ports are joined + to the same bridge, but without enabling "switch" mode, or to different + bridges. + - learning disabled on ports as it make not too much sense for + segregated ports - no forwarding in HW. + - enabled basic support for devlink. + + :: + + devlink dev show + platform/48484000.switch + + devlink dev param show + platform/48484000.switch: + name switch_mode type driver-specific + values: + cmode runtime value false + name ale_bypass type driver-specific + values: + cmode runtime value false + +Devlink configuration parameters +================================ + +See Documentation/networking/devlink/ti-cpsw-switch.rst + +Bridging in dual mac mode +========================= + +The dual_mac mode requires two vids to be reserved for internal purposes, +which, by default, equal CPSW Port numbers. As result, bridge has to be +configured in vlan unaware mode or default_pvid has to be adjusted:: + + ip link add name br0 type bridge + ip link set dev br0 type bridge vlan_filtering 0 + echo 0 > /sys/class/net/br0/bridge/default_pvid + ip link set dev sw0p1 master br0 + ip link set dev sw0p2 master br0 + +or:: + + ip link add name br0 type bridge + ip link set dev br0 type bridge vlan_filtering 0 + echo 100 > /sys/class/net/br0/bridge/default_pvid + ip link set dev br0 type bridge vlan_filtering 1 + ip link set dev sw0p1 master br0 + ip link set dev sw0p2 master br0 + +Enabling "switch" +================= + +The Switch mode can be enabled by configuring devlink driver parameter +"switch_mode" to 1/true:: + + devlink dev param set platform/48484000.switch \ + name switch_mode value 1 cmode runtime + +This can be done regardless of the state of Port's netdev devices - UP/DOWN, but +Port's netdev devices have to be in UP before joining to the bridge to avoid +overwriting of bridge configuration as CPSW switch driver copletly reloads its +configuration when first Port changes its state to UP. + +When the both interfaces joined the bridge - CPSW switch driver will enable +marking packets with offload_fwd_mark flag unless "ale_bypass=0" + +All configuration is implemented via switchdev API. + +Bridge setup +============ + +:: + + devlink dev param set platform/48484000.switch \ + name switch_mode value 1 cmode runtime + + ip link add name br0 type bridge + ip link set dev br0 type bridge ageing_time 1000 + ip link set dev sw0p1 up + ip link set dev sw0p2 up + ip link set dev sw0p1 master br0 + ip link set dev sw0p2 master br0 + + [*] bridge vlan add dev br0 vid 1 pvid untagged self + + [*] if vlan_filtering=1. where default_pvid=1 + + Note. Steps [*] are mandatory. + + +On/off STP +========== + +:: + + ip link set dev BRDEV type bridge stp_state 1/0 + +VLAN configuration +================== + +:: + + bridge vlan add dev br0 vid 1 pvid untagged self <---- add cpu port to VLAN 1 + +Note. This step is mandatory for bridge/default_pvid. + +Add extra VLANs +=============== + + 1. untagged:: + + bridge vlan add dev sw0p1 vid 100 pvid untagged master + bridge vlan add dev sw0p2 vid 100 pvid untagged master + bridge vlan add dev br0 vid 100 pvid untagged self <---- Add cpu port to VLAN100 + + 2. tagged:: + + bridge vlan add dev sw0p1 vid 100 master + bridge vlan add dev sw0p2 vid 100 master + bridge vlan add dev br0 vid 100 pvid tagged self <---- Add cpu port to VLAN100 + +FDBs +---- + +FDBs are automatically added on the appropriate switch port upon detection + +Manually adding FDBs:: + + bridge fdb add aa:bb:cc:dd:ee:ff dev sw0p1 master vlan 100 + bridge fdb add aa:bb:cc:dd:ee:fe dev sw0p2 master <---- Add on all VLANs + +MDBs +---- + +MDBs are automatically added on the appropriate switch port upon detection + +Manually adding MDBs:: + + bridge mdb add dev br0 port sw0p1 grp 239.1.1.1 permanent vid 100 + bridge mdb add dev br0 port sw0p1 grp 239.1.1.1 permanent <---- Add on all VLANs + +Multicast flooding +================== +CPU port mcast_flooding is always on + +Turning flooding on/off on switch ports: +bridge link set dev sw0p1 mcast_flood on/off + +Access and Trunk port +===================== + +:: + + bridge vlan add dev sw0p1 vid 100 pvid untagged master + bridge vlan add dev sw0p2 vid 100 master + + + bridge vlan add dev br0 vid 100 self + ip link add link br0 name br0.100 type vlan id 100 + +Note. Setting PVID on Bridge device itself working only for +default VLAN (default_pvid). + +NFS +=== + +The only way for NFS to work is by chrooting to a minimal environment when +switch configuration that will affect connectivity is needed. +Assuming you are booting NFS with eth1 interface(the script is hacky and +it's just there to prove NFS is doable). + +setup.sh:: + + #!/bin/sh + mkdir proc + mount -t proc none /proc + ifconfig br0 > /dev/null + if [ $? -ne 0 ]; then + echo "Setting up bridge" + ip link add name br0 type bridge + ip link set dev br0 type bridge ageing_time 1000 + ip link set dev br0 type bridge vlan_filtering 1 + + ip link set eth1 down + ip link set eth1 name sw0p1 + ip link set dev sw0p1 up + ip link set dev sw0p2 up + ip link set dev sw0p2 master br0 + ip link set dev sw0p1 master br0 + bridge vlan add dev br0 vid 1 pvid untagged self + ifconfig sw0p1 0.0.0.0 + udhchc -i br0 + fi + umount /proc + +run_nfs.sh::: + + #!/bin/sh + mkdir /tmp/root/bin -p + mkdir /tmp/root/lib -p + + cp -r /lib/ /tmp/root/ + cp -r /bin/ /tmp/root/ + cp /sbin/ip /tmp/root/bin + cp /sbin/bridge /tmp/root/bin + cp /sbin/ifconfig /tmp/root/bin + cp /sbin/udhcpc /tmp/root/bin + cp /path/to/setup.sh /tmp/root/bin + chroot /tmp/root/ busybox sh /bin/setup.sh + + run ./run_nfs.sh diff --git a/Documentation/networking/device_drivers/ethernet/ti/tlan.rst b/Documentation/networking/device_drivers/ethernet/ti/tlan.rst new file mode 100644 index 000000000000..4fdc0907f4fc --- /dev/null +++ b/Documentation/networking/device_drivers/ethernet/ti/tlan.rst @@ -0,0 +1,140 @@ +.. SPDX-License-Identifier: GPL-2.0 + +===================== +TLAN driver for Linux +===================== + +:Version: 1.14a + +(C) 1997-1998 Caldera, Inc. + +(C) 1998 James Banks + +(C) 1999-2001 Torben Mathiasen <tmm@image.dk, torben.mathiasen@compaq.com> + +For driver information/updates visit http://www.compaq.com + + + + + +I. Supported Devices +==================== + + Only PCI devices will work with this driver. + + Supported: + + ========= ========= =========================================== + Vendor ID Device ID Name + ========= ========= =========================================== + 0e11 ae32 Compaq Netelligent 10/100 TX PCI UTP + 0e11 ae34 Compaq Netelligent 10 T PCI UTP + 0e11 ae35 Compaq Integrated NetFlex 3/P + 0e11 ae40 Compaq Netelligent Dual 10/100 TX PCI UTP + 0e11 ae43 Compaq Netelligent Integrated 10/100 TX UTP + 0e11 b011 Compaq Netelligent 10/100 TX Embedded UTP + 0e11 b012 Compaq Netelligent 10 T/2 PCI UTP/Coax + 0e11 b030 Compaq Netelligent 10/100 TX UTP + 0e11 f130 Compaq NetFlex 3/P + 0e11 f150 Compaq NetFlex 3/P + 108d 0012 Olicom OC-2325 + 108d 0013 Olicom OC-2183 + 108d 0014 Olicom OC-2326 + ========= ========= =========================================== + + + Caveats: + + I am not sure if 100BaseTX daughterboards (for those cards which + support such things) will work. I haven't had any solid evidence + either way. + + However, if a card supports 100BaseTx without requiring an add + on daughterboard, it should work with 100BaseTx. + + The "Netelligent 10 T/2 PCI UTP/Coax" (b012) device is untested, + but I do not expect any problems. + + +II. Driver Options +================== + + 1. You can append debug=x to the end of the insmod line to get + debug messages, where x is a bit field where the bits mean + the following: + + ==== ===================================== + 0x01 Turn on general debugging messages. + 0x02 Turn on receive debugging messages. + 0x04 Turn on transmit debugging messages. + 0x08 Turn on list debugging messages. + ==== ===================================== + + 2. You can append aui=1 to the end of the insmod line to cause + the adapter to use the AUI interface instead of the 10 Base T + interface. This is also what to do if you want to use the BNC + connector on a TLAN based device. (Setting this option on a + device that does not have an AUI/BNC connector will probably + cause it to not function correctly.) + + 3. You can set duplex=1 to force half duplex, and duplex=2 to + force full duplex. + + 4. You can set speed=10 to force 10Mbs operation, and speed=100 + to force 100Mbs operation. (I'm not sure what will happen + if a card which only supports 10Mbs is forced into 100Mbs + mode.) + + 5. You have to use speed=X duplex=Y together now. If you just + do "insmod tlan.o speed=100" the driver will do Auto-Neg. + To force a 10Mbps Half-Duplex link do "insmod tlan.o speed=10 + duplex=1". + + 6. If the driver is built into the kernel, you can use the 3rd + and 4th parameters to set aui and debug respectively. For + example:: + + ether=0,0,0x1,0x7,eth0 + + This sets aui to 0x1 and debug to 0x7, assuming eth0 is a + supported TLAN device. + + The bits in the third byte are assigned as follows: + + ==== =============== + 0x01 aui + 0x02 use half duplex + 0x04 use full duplex + 0x08 use 10BaseT + 0x10 use 100BaseTx + ==== =============== + + You also need to set both speed and duplex settings when forcing + speeds with kernel-parameters. + ether=0,0,0x12,0,eth0 will force link to 100Mbps Half-Duplex. + + 7. If you have more than one tlan adapter in your system, you can + use the above options on a per adapter basis. To force a 100Mbit/HD + link with your eth1 adapter use:: + + insmod tlan speed=0,100 duplex=0,1 + + Now eth0 will use auto-neg and eth1 will be forced to 100Mbit/HD. + Note that the tlan driver supports a maximum of 8 adapters. + + +III. Things to try if you have problems +======================================= + + 1. Make sure your card's PCI id is among those listed in + section I, above. + 2. Make sure routing is correct. + 3. Try forcing different speed/duplex settings + + +There is also a tlan mailing list which you can join by sending "subscribe tlan" +in the body of an email to majordomo@vuser.vu.union.edu. + +There is also a tlan website at http://www.compaq.com + |